# Scrapy settings for qq_music_text project
#
# For simplicity, this file contains only settings considered important or
# commonly used. You can find more settings consulting the documentation:
#
#     https://docs.scrapy.org/en/latest/topics/settings.html
#     https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#     https://docs.scrapy.org/en/latest/topics/spider-middleware.html

from qq_music_text.pipelines import JsonWriterPipeline, MongoPipeline, QqMusicTextPipeline ,ImageDownloadPipeline


BOT_NAME = 'qq_music_text'

SPIDER_MODULES = ['qq_music_text.spiders']
NEWSPIDER_MODULE = 'qq_music_text.spiders'

# 设置存放图片的路径
IMAGES_STORE = 'D:\\pwn\\qq_music_text\\image'


# Crawl responsibly by identifying yourself (and your website) on the user-agent
#USER_AGENT = 'qq_music_text (+http://www.yourdomain.com)'
USER_AGENT = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36'

# Obey robots.txt rules
ROBOTSTXT_OBEY = True

# Configure maximum concurrent requests performed by Scrapy (default: 16)
#CONCURRENT_REQUESTS = 32

# Configure a delay for requests for the same website (default: 0)
# See https://docs.scrapy.org/en/latest/topics/settings.html#download-delay
# See also autothrottle settings and docs
#DOWNLOAD_DELAY = 3
# The download delay setting will honor only one of:
#CONCURRENT_REQUESTS_PER_DOMAIN = 16
#CONCURRENT_REQUESTS_PER_IP = 16

# Disable cookies (enabled by default)
#COOKIES_ENABLED = False

# Disable Telnet Console (enabled by default)
#TELNETCONSOLE_ENABLED = False

# Override the default request headers:
#DEFAULT_REQUEST_HEADERS = {
#   'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
#   'Accept-Language': 'en',
#}

# Enable or disable spider middlewares
# See https://docs.scrapy.org/en/latest/topics/spider-middleware.html
#SPIDER_MIDDLEWARES = {
#    'qq_music_text.middlewares.QqMusicTextSpiderMiddleware': 543,
#}

# Enable or disable downloader middlewares
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html
#DOWNLOADER_MIDDLEWARES = {
#    'qq_music_text.middlewares.QqMusicTextDownloaderMiddleware': 543,
#}

# Enable or disable extensions
# See https://docs.scrapy.org/en/latest/topics/extensions.html
#EXTENSIONS = {
#    'scrapy.extensions.telnet.TelnetConsole': None,
#}

# Configure item pipelines
# See https://docs.scrapy.org/en/latest/topics/item-pipeline.html
ITEM_PIPELINES = {
#    'qq_music_text.pipelines.QqMusicTextPipeline': 300,
#    'qq_music_text.pipelines.MongoPipeline': 301,
#    'qq_music_text.pipelines.JsonWriterPipeline': 302,
    'qq_music_text.pipelines.ImageDownloadPipeline': 300
}

# Enable and configure the AutoThrottle extension (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/autothrottle.html
#AUTOTHROTTLE_ENABLED = True
# The initial download delay
#AUTOTHROTTLE_START_DELAY = 5
# The maximum download delay to be set in case of high latencies
#AUTOTHROTTLE_MAX_DELAY = 60
# The average number of requests Scrapy should be sending in parallel to
# each remote server
#AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
# Enable showing throttling stats for every response received:
#AUTOTHROTTLE_DEBUG = False

# Enable and configure HTTP caching (disabled by default)
# See https://docs.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
#HTTPCACHE_ENABLED = True
#HTTPCACHE_EXPIRATION_SECS = 0
#HTTPCACHE_DIR = 'httpcache'
#HTTPCACHE_IGNORE_HTTP_CODES = []
#HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'

#对应小分辨率的图片和大分辨率的图片
IMAGES_THUMBS = {
    'small': (50, 50),   # (宽， 高)
    'big': (270, 270),
}

# 90天的图片失效期限(避免下载最近已经下载的图片)
IMAGES_EXPIRES = 90

#自动限速
# 启用AutoThrottle扩展
AUTOTHROTTLE_ENABLED = True
# 初始下载延迟(单位:秒)
AUTOTHROTTLE_START_DELAY = 5
# 在高延迟情况下最大的下载延迟(单位秒)
AUTOTHROTTLE_MAX_DELAY = 60
# 设置 Scrapy应该与远程网站并行发送的平均请求数, 目前是以1个并发请求数
AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
# 启用AutoThrottle调试模式
#AUTOTHROTTLE_DEBUG = False
